Telemeter.



RISTTZER.

TBLEMETER.

APPLICATION FILED JAN.20, 1913.

1,100,850. Patented Jude 23, 1914.

2 SHEETS-SHEET l.

L f wf @i W1 c a, b: C

R.STTZER.

TBLEMETBR,

APFLLCATON T13/EB JAH. 20, 1033. 1,109,856, Patentad June 19M.

Z HEETBASEST 2.

RUDOLF STTZER, OF JENA, GERMAN Y, ASGNOR TO THE FIRM OF CARL ZISS` OF JENA, GERMANY.

TELEMETER.

Appncatiaii inea January 2o, 191s.

ii i known that L R1 nom' S'ii''rmin, 11 l tizi; tintin-1111'litnpirv. rtwiiling; :1L 5121111111111', 'now inwntwl :1 new :1111i *i lva'lvntktfl" (if wlii'lt tint ilttlln'ning is 1,1 pm-itiwit'ion.

'fini inrivinion rvlittus to :1 'l'nrthvr tlcrelY alpin-Cnt, of the tvhfnnttor luwriheil in the ireriiiiistion Sirrinl No, 712,347 11n l covered fwiwin -:i i-liiixn 1:. l for 5in-h 11n inftrn'- i1-.wit this inlhvi ifnntiition he nnnlc, th;1t in :nio 'ihn eiljtwting lipoSiiir-n ntl \'11^1 wrm i, cnpihle of living' roiohlct'nliv wiinpliiiuil. inni. hrw-M111; without nn nlnnnnio of tht* oiihirm wir 111g firrnngitnrnt living lod. llihi-rlo thu vontingvnt tftror of rotitwtion ipp-intimi in tht* ntljtwting' ilihponition with no :i 11; ign 11.-: in iin' tnvmnring ilixpon inn, r1.1 tlntt it nvtitrtilimil itrtflf 11 it worn, iwriinw thv coniptnmitnn whith huil bonn 1' Aghi uhont. in that winning" 1li positi n.

-ii in Lin ,www way in thv nnztgnrini listh-:- nrrzangcnnni :iri'ortling to 'thu itz-Htinp 1h11 trltii 0i' lillcvtiftn in ""1 ,iidlnwiiion l1-1 r1rtninly .till tim.

otnto wlw. hui, they Oppmito :125311, to

inizi in thioin. .io thiit. when voin- 1n thi;A onf disposition it tnlios iiionhly in thoy otfhor, Vif. htsitl unil nhirh n1n 1 otlnnA fhtring; rotolintinvnt: plum-nient of wai :intl in niiv 1111` Alwin ronirnry to ntioin thv error nl" relive- :iih adjusting indication is Specification of Letters Patent.

utontcd June 23, 1914.

sefia1n0-z43231.

l on thi1 Continir Ivpvntlint on tho error nl' rnllwtion :intl i5 proacntul according to the sign ol tinl lutter hy :i1 pointy of thtl scale bci'oro or lwhintl infinity. Vlt ninst he 1150ertztintil. whcn tho tvloinctci' is being mudo. Shonltl it he labirinti in Sinto of theI finite error ot rctlirtion to employ they convenient: :nl jiminf: intlirzitinn intinity7 11 conipcnnutor nnty he nmilo uw of, when the instrument is lining; nntdt. whif-h i5 sin disposml t0 inlhnnio the rvlntiro position 0f the inniges onliv in one otL thv two dispositions 0f the rethvting' \'\t1\in.

By manon o the new arrangement, for vhnnging t'ront 11110 ilipmition to the other 11nd vict) 1121:11 tht` rvtlm'ting Syatcni is only So inorfftl that it- :ixin of incidence rvnniin` ptirnlhl to itwlt 11n nrh inorcnnnt taking phnv. The ,@,itnphst uws of gnrh i1 inov- 11n-nt 1.11'1 t'nnt :11111, in` which the reflecting `ntini i rotntiul oy npprox'nnntvly 180i in 11 plzinipui-nilo? to thix hasn-lino unil perpen- 1li1'11h1r to ihn @mining plaine, :1nd that one,` in nhit'h it ifl tlisplztueil parallel to the haselinv. 'Winni thv 11tlerft1ng sistem produces 11 ilisphnvnivni ot' hotii entering axial rays, 11:11.41 i thv two rvtlei-tingg pnrt--,\ \ft1n'1s is to ho nnnlc iinirpcxnlcntly inovnhley in the Intui- 1111' initiintrtl.

in thix nnntxwl thawing: lfig'nrrs 1 11ml 2 :1re li:1 r:11nnn1tiplan views ol one forni of the tchfnntvr 11i-,voiding to the invention in thv nnusnning` :nul in tho ntljnsting dispositions ruspwtiriilv. Figs. il unil 4 :1re 1-1in1i hir virn's ot ;1 iw-11ml t'orln of thix tclenlvtir. l"`i r 1 f1 :intl it :11il y`in1il11r virws of a1 third forni nt'k tho tolvrnntir. Figs. T :1nd H 111'(- iniihir \i1\\\ ol' -1 t'onrlh forni mi' the iclont- Vlor. Fi u t) :unl i0 1111* itnilnr views of :1 fifth t`o1'n1 otl thv tvlvlniftvr. Figs. ll :1nd 1'. nli Sinii'ntr vimrs of 11 Sixth forni of thc. triltnwttr, Figs. l :1111i '14 :1ro similar views o' :1 sti'vnth forni ot` thv tuhnnter. Fig. lf is n hnri'fiontnl nxinl st'fstion through 11 11 I1.tr1ttiot1;1l mfnnpliA of tlnrl tulin'lclir :1C- i'ortling 1o thiA inwntion in thv nnubltringf 1li po.-ition. iti :t itnilnr View of thi` inhtrinncnt in thi- :nljnstinz: disposition. l"i.^ wtion on limA lin-1T ol' lii. it.

tively) are shown. It should, however, be mentioned, that in the choice of the ocular system regard must be had for the position of the reflecting system in the adjusting disposition. Thus in the example Figs. 7 and 8 a downward direction of inspection is to be assumed.

From the measuring dispositions according to Figs. l and 3 the corresponding adjusting dispositions are derived, in Fig. 2 by rotating the reflecting system I, II about the axial ray emerging from it, in Fig. 4 by displacing the reflecting system I, Il.

From the measuring dispositions according to Figs. 5 and 7 the corresponding adjusting dispositions are derived, in Fig. 6 by rotating the reflecting systems I, II about the emerging axial ray, 1n Fig. 8 by displacing the reflecting system I, II.

From the measuring dispositions according to Figs. 9 and l1 the corresponding adjusting dispositions accordin to Figs. 10 and 12 are in either case derived by rotating the two reflecting part-systems I, II and III, IV about the emerging axial rays.

From the measuring disposition according to Fig. 13 the corresponding adjusting disposition according to Fig. 14 is derived by rotating the two reflecting part-systems I, Il and III, IV about the einergin raxial rays.

As explained in the speci cation No. 712,347 in the reflecting systems in place of the simple reflecting prisms rigidly connected together in pairs optical square prisms may also be employed and in Figs. 5, 7, l] and 13 one of the prisms of each pair of simple prisms can be provided with a ridgesurface, in order to give to this pair of prisms the property of a central reflector.

It remains to be Shown, that in both forms of the new arrangement. on the retlecting system or'its part-systems being rotated and on their being displaced, with the change of the disposition the sign of the error of reflection also changes. For this purpose the deflection in the clockwise direction shall be reckoned as positive and by R and L shall be understood the respective algebraic suin ot' alldetleetions, which the axial ray passing through the right-hand and left-hand objective respectively experiences through the reflecting system. The dillereiice RL shall then be taken as representing the error of reflection.

In the measuring disposition according to Figs. l and fl llzill-um L20, the error It-liz'uwi/H. In the adjusting disposition according to Fig. 2 llr-fuif^um L20, the error l-lliri/H--uf. In the adjusting disposition according to Fig. 4 RIG, L11/zwom, the error R-L-:vuH-ul.

ln the measuring disposition according to Figs. Il and 7 Bruid-'m1, L20, the error I--lnfrlwu- In the adjusting disposition Fig. 9 RzuI-ufu, L1: wcmeguw, the er. RNLINI toptien-fun In the adjt ng disposition according to Fig. lt) .R r* uri-ull. LzmU-wi-, the error 'lMlrffr--1",-{HU-Y In the measuring disposition according to Fig. 11 Rzuriam lQ-:-if.m-l-Q./W, the error R-L:iil+uu+ummuw In the adjustingy In Figs. l5 to l? the transition from the measuring to the adjusting disposition ano vice versar is produced bj; displacing the fleeting system. The optical system accord ing to Figs. 3 and 4 is employed, the retire-- tors 0 being' replaced by optical square prisms 0 and a suitable separating prism f as Well as an ocular j being added, to coincidence telemeter, of the two iina which that beloliging to the lett-han of the baseline. is erect. that belon the rightdiand end upside, down. fleeting system l, 1I is nonvrotatably guided with its cylindrical casing g in the bushing' LO of the main easing /z and with its ila. E y@ in this main casing and on the longitudinal ribs h1 of the latter. lo the reti prism I is cemented a smaller one I", wlii: o allows a part of the rays received by I io emerge again as thi-cupi a {dane-parade? plate. These rays passing ythrough tir' double prism I, IO `without final deflection are received in the adjusting disposition ar cording to Fig. 1G by the right-hand poi tagoiial prism CO. A retracting prism rotatably fitted in the easing g in front 1, the retlecting prism I, c. g., as shown in il drawing, journaled by means of a screw.. thread. It serves in the following marin.. as the abovementioned compensator. In the last stage of the manufacture of the telen` eter trst of all in the adjusting disposition, Fig. 16, coincidence is obtained by mea et the measuring device b for an object at ainv given distance and the indicating device coi reeted, if it does not already indicate iii finity. The error of reflection inherent in the reflecting system I, II is noe: connue.' sated by an. equally great, but opposite ci ror, which, e. g., is on. ine' to the position the measuring device L. (ln cliabgir the measuring disposition. Fig. 15, the een of reflection acts, as has been sliouii abut 'I ere 1`r0 saine value and the opposite sign as that reetion ot' which entei'inUr axial ra S in the the ad'ustinr dis osition the distance a )art n l b 5 ailjuaiing `lispmition is parallel to that of the entering axial rays in the measuring d15- position, that axial my, which enters the said movable pair of nnnxbel's, remaining pafrallel to itself during the said movement of the said one pail' of members relatively to thei telescope systems, the error of reflection with the adjusting dieposition having the with the measuring disposition, and, with of the two entering axial rays in the Sight4 ing plane being zero, and a eoniiiensutor heing tted in such a manner as lo intiuenee 15 the relative position of the said images only in one disposition of the said reflecting eystem.

RUDOLF LTUTZER. lVitnesses:

PAUL KRGER, RICHARD HAHN.' 

